CNC Cutting Speed & Feed Rate Calculator
Calculate spindle RPM (n), feed rate Vf (mm/min), and feed per rev (fr) for milling, turning, and drilling operations.
Results
| Spindle Speed n | — RPM |
| Feed Rate Vf | — mm/min |
| Feed Per Rev fr | — mm/rev |
| Rounded Spindle Setting | — RPM |
Formulas
Spindle Speed: n = (1000 × Vc) / (π × D) (RPM)
Feed Rate (Milling): Vf = n × Z × fz (mm/min)
Feed Rate (Turning): Vf = n × fr (mm/min)
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